Also called "entoptic phenomena" (plural of
"entoptic phenomenon"). It's the name of every sensations that come
from the inside of the eye (ent-optic= inside the optics). So one
sees things that do not exist outside the eye.
Lots of people who suffer from floaters also
have these kinds of symptoms. Since it's hard to describe them, I've
decided to try to draw these perceptions that other people cannot
see. Click on the links to get more information and see
cells : little white dots, bright
particles moving all around which are actually blood corpuscles
flowing in the capillaries of the retina.
- sparkles : little dots illuminating in the central vision and
propagating outward. Most visible when you look at something
bright then close your eyes or immediatly look at something
- After-images : they are caused by tired light receptors in our
eyes. After being excited by light from the image, they continue
to send weak signals to the brain. These weak after-signals are
always in the opposite or complimentary of the original color.